Reading and Clearing Diagnostic Trouble Codes

Self-Diagnosis Function
There are four modes of self-diagnosis. These modes must be followed in the following order:
1. Entering diagnostics mode
2. Requesting number of fault codes mode
3. Requesting fault codes mode
4. Clearing fault codes mode

Self-diagnosis can be manually exited by turning the ignition OFF or selecting reverse gear. Self-diagnosis will exit unless a fault code request occurs before a message is repeated five times without acknowledgement.

ENTERING DIAGNOSTICS MODE




1. Turn ignition switch ON. Sonar system OFF switch indicator lamp illuminates for three seconds and then turns off.
2. Immediately push sonar system OFF switch ten times within five seconds.
3. The rear sonar buzzer will sound once and the sonar system OFF indicator will flash once.

REQUESTING NUMBER OF FAULT CODES MODE




1. While in "entering diagnostic mode", push sonar system OFF switch once within 30 seconds of entering diagnostic mode.

NOTE: If the number of fault codes is not requested within 30 seconds after entering diagnostic mode, the system will return to regular operation mode.

2. The rear sonar buzzer will sound once.
3. Sonar system OFF indicator will flash once and rear sonar buzzer will sound once for each fault code detected.
4. There will be a four second pause.
5. The number of fault codes will repeat five times then pause.

NOTE: Self-diagnosis will exit unless "requesting fault codes mode" occurs before five repeats ends.

REQUESTING FAULT CODES MODE




1. While in "requesting number of fault codes" mode, push sonar system OFF switch once.
2. The rear sonar buzzer will sound once.
3. Sonar system OFF indicator will flash and rear sonar buzzer will sound the first digit of the fault code followed by a one second pause.
4. Sonar system OFF indicator will flash and rear sonar buzzer will sound the second digit of the fault code followed by a four second pause.
5. Each fault code will repeat five times then pause.
6. Write down each fault code. Then, acknowledge the fault code by pushing the sonar system OFF switch once (the rear sonar buzzer may sound).

NOTE: "Requesting fault codes mode" will exit unless the fault code is acknowledged before it is repeated five times. When all fault codes have been indicated, "clearing fault codes mode" will be entered. Refer to SN-24, "DTC Index". Sonar Control Unit For Rear Sonar System

CLEARING FAULT CODES MODE

NOTE: While in "clearing fault codes mode", self-diagnosis will automatically exit if no activity occurs for 30 seconds.




1. Push and hold sonar system OFF switch for three seconds to reset time-out counter.
2. Push and hold sonar system OFF switch for three seconds to clear codes.